PG_TS_PARSER

Updated on 2024-12-19 GMT+08:00

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PG_TS_PARSER records entries defining text search parsers. A parser splits input text into lexemes and assigns a token type to each lexeme. Since a parser must be implemented by C functions, parsers can be created only by database administrators.

**Table 1** PG_TS_PARSER columns
Name	Type	Reference	Description
oid	oid	-	Row identifier (hidden attribute; must be explicitly selected)
prsname	name	-	Text search parser name
prsnamespace	oid	PG_NAMESPACE.oid	OID of the namespace that contains the parser
prsstart	regproc	PG_PROC.oid	OID of the parser's startup function
prstoken	regproc	PG_PROC.oid	OID of the parser's next-token function
prsend	regproc	PG_PROC.oid	OID of the parser's shutdown function
prsheadline	regproc	PG_PROC.oid	OID of the parser's headline function
prslextype	regproc	PG_PROC.oid	OID of the parser's lextype function